Creating email analysis tool

I am curious to start on a cybersecurity project just for fun and to learn more about email analysis. Because at work, we usually do this manually for potential phishing mails like checking the headers, URLs, email content, etc, I was wondering if there is already any existing Github projects/softwares out there to automate this. If none, how feasible is this or what would I have to know prior to deep diving into developing such a tool. I am not …

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